Games like Royal Riders
Games like Royal Riders include Kingdom Rush - Tower Defense, Kingdom Rush 5: Alliance TD, Kingdom Rush Vengeance - Tower Defense, Mount & Blade II: Bannerlord, and Kingdom Rush Frontiers - Tower Defense. We matched them by the tags players give Royal Riders on Steam (Action, Adventure, Strategy, 2D, and Interactive Fiction): closest matches first, and among equally close ones the better-known games.

Kingdom Rush - Tower Defense
Shared: Strategy · 2D · Action

Kingdom Rush 5: Alliance TD
Shared: Strategy · 2D · Cartoon

Kingdom Rush Vengeance - Tower Defense
Shared: Strategy · 2D · Adventure

Mount & Blade II: Bannerlord
Shared: Strategy · Action · Medieval

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · 2D · Adventure

Middle-earth: Shadow of War
Shared: Action · Adventure · Fantasy

Idle Champions of the Forgotten Realms
Shared: Strategy · Adventure · Fantasy

Mount & Blade: Warband
Shared: Strategy · Action · Adventure

Crimson Desert Enhanced
Shared: Action · Adventure · Fantasy

Dust: An Elysian Tail
Shared: Action · Adventure · 2D

The Escapists
Shared: Strategy · 2D · Action

A Plague Tale: Requiem
Shared: Action · Adventure · Cinematic

Your Only Move Is HUSTLE
Shared: Action · Strategy · 2D

Kingdom Rush 6: Genesis TD
Shared: Action · Strategy · 2D

South Park™: The Stick of Truth™
Shared: Adventure · Action · 2D

The Witcher 3: Wild Hunt — Remastered
Shared: Adventure · Fantasy · Action

Eastern Exorcist
Shared: Action · Adventure · 2D

Total War: WARHAMMER II
Shared: Strategy · Action · Fantasy

Kingdom Rush Origins - Tower Defense
Shared: Strategy · 2D · Action

Skul: The Hero Slayer
Shared: Action · 2D · Indie

Middle-earth™: Shadow of Mordor™
Shared: Action · Adventure · Fantasy

BEEP
Shared: Adventure · 2D · Action

Wolcen: Lords of Mayhem
Shared: Action · Adventure · Dark Fantasy

GemCraft - Chasing Shadows
Shared: Strategy · Action · 2D